I'm having difficulty overlaying maps when writing to a file graphics device. My command sequence has the structure
plot(map1) par(new = T) plot(map2) On the screen device, it works fine. When I attempt something like png(file = "map.png") plot(map1) par(new = T) plot(map2) dev.off() only the last map appears, the previous ones having been cleared. Can someone clarify? Thanks, Michael Laviolette PhD MPH New Hampshire Department of Health and Human Services ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
